Question

Two sets of quadratic expressions are shown below in various forms: Line 1: x2 + 3x + 2 (x + 1)(x + 2) (x + 1.5)2 − 0.25 Line 2: x2 + 5x + 6 (x + 2)(x + 3) (x + 2.5)2 + 6.25

Which line contains 3 equivalent expressions?

Answer 1

Its line 1

if we expand the second and third expressions they come back to the first.

The last one is called the vertex form of a parabola